Highlights
- Traditional hospital disinfectants may contribute to respiratory irritation and occupational asthma concerns.
- Bleach and quaternary ammonium compounds (QACs) are common cleaning agents in healthcare environments.
- Healthcare workers may experience repeated exposure to harsh disinfectant chemicals during daily cleaning routines.
- Antimicrobial resistant bacteria continue to challenge hospital infection-control programs.
- Hypochlorous acid spray is gaining attention as a safer cleaning agent for healthcare environments.
This article is part of the Healthcare Disinfection Series on infection control in healthcare settings.
View the full Healthcare Disinfection Series: Infection Control in Canadian Healthcare Facilities
The Evidence: Years of Research on Worker Health
Decades of international research confirm what many Canadian healthcare workers already know: harsh disinfectants can be as damaging to people as they are to pathogens. A 2023 review published in the Journal of Occupational and Environmental Hygiene examined occupational exposure to disinfectants and respiratory risks among healthcare workers, reinforcing concerns around occupational asthma and repeated chemical exposure in healthcare environments.
Additional healthcare worker studies published in the Journal of Allergy and Clinical Immunology: In Practice examined how repeated disinfectant exposure may contribute to asthma symptoms and respiratory irritation among healthcare workers. A separate PubMed Central review also discussed broader concerns surrounding chronic respiratory disease and repeated disinfectant exposure in healthcare environments.
The picture is global. A study published in PubMed Central examined healthcare worker exposure to glutaraldehyde, formaldehyde, and chlorhexidine in Southern African hospitals and identified exposure–response relationships associated with airway disease and respiratory symptoms. A separate study published in Contact Dermatitis found that 14.8% of healthcare staff reported work-related skin symptoms linked to cleaning agents and disinfectant exposure.
These findings continue shaping discussions around occupational asthma and chronic respiratory disease in healthcare environments where disinfectants are used continuously throughout the day. They also echo European consensus statements identifying professional cleaning exposures — including sprays, bleach, and QACs — as recognized contributors to occupational asthma and supporting the transition toward safer alternatives.
Many healthcare facilities are now reviewing how hypochlorous acid supports safer disinfectant strategies in healthcare environments where repeated chemical exposure is a growing occupational concern. For safer, Canadian-made disinfectants tailored for healthcare settings, explore our School & Workplace Collection.
The Problem with Chemical-Heavy Disinfectants
Canadian hospitals rely heavily on bleach, quaternary ammonium compounds (QACs), and hydrogen peroxide. While all are effective on paper, their drawbacks are becoming increasingly clear:
- Bleach: Corrosive, strong-smelling, and damaging to grout, metals, and equipment.
- QACs: Linked to antimicrobial resistance and ineffective against certain pathogens.
- Hydrogen peroxide: Less toxic than bleach, but irritating to skin and eyes and unstable in storage.
Healthcare administrators must now balance infection-control requirements with indoor air quality, staff exposure concerns, and long-term equipment durability.
The Human Cost: Staff and Patient Safety
Frequent exposure to chemical disinfectants causes asthma, respiratory issues, and dermatitis among healthcare staff. Patients — especially those with weakened immune systems — are also at risk when strong fumes linger in hospital rooms. Harsh odours compromise indoor air quality and patient comfort, while staff compliance drops when products are irritating to use. Some healthcare facilities are now evaluating whether safer cleaning agents can reduce respiratory irritation without compromising disinfectant performance.
Surface and Equipment Damage
Modern hospitals are filled with delicate equipment: monitors, ventilators, and diagnostic tools. Unfortunately, bleach and QACs degrade plastics, rubber, and metal surfaces over time. Replacing or repairing this equipment adds unnecessary costs — and can even put patient safety at risk if devices fail prematurely.
Reducing repeated exposure to corrosive cleaning agents may also help healthcare facilities extend the usable lifespan of high-value medical equipment.
Antimicrobial Resistance: A Silent Threat
The Public Health Agency of Canada highlights that pathogens like MRSA and C. difficile continue to cause outbreaks despite routine cleaning. Overuse of QACs contributes to microbial adaptation, making disinfectants less effective over time.
A 2023 review published in Antimicrobial Resistance & Infection Control examined how repeated exposure to quaternary ammonium compounds may contribute to microbial tolerance and potential antibiotic resistance concerns over time. Hospitals need disinfectants that kill pathogens without accelerating resistance. These concerns are contributing to broader discussions around safer disinfectant strategies in hospitals and long-term care settings.
For other safe alternatives tailored for healthcare, visit our Safe Alternatives Collection.
Workflow Inefficiencies with Harsh Chemicals
Many chemical disinfectants require long dwell times (up to 10 minutes) to work effectively. In fast-paced hospital environments, waiting this long between patients or procedures is impractical. The result? Corners are cut, compliance drops, and infections persist.
Healthcare facilities continue evaluating cleaning agents that support faster room turnover while still maintaining consistent disinfectant coverage across high-touch healthcare environments.
HOCl: A Safer, Smarter Alternative
Hypochlorous acid (HOCl) addresses all of these issues:
- Broad-spectrum power: Kills bacteria, viruses, fungi, and spores.
- Rapid action: Works in under a minute, reducing room turnover time.
- Safe for staff and patients: No toxic fumes, no harmful residue.
- Non-damaging: Gentle on plastics, metals, and sensitive surfaces.
- Eco-friendly: Biodegradable and VOC-free.
Researchers continue studying hypochlorous acid spray because of its strong disinfectant performance against a wide range of pathogens, including antimicrobial resistant bacteria and biofilm-producing strains associated with healthcare-associated infections. A 2022 study published in Microbiology Spectrum examined HOCl activity against drug-resistant and biofilm-producing pathogens in healthcare environments.
Healthcare facilities worldwide are already adopting HOCl, and Canadian hospitals can follow suit with confidence.
Overcoming Spray Restrictions in Hospitals
Spray bottles are often discouraged in healthcare environments due to infection control concerns. But HOCl isn’t limited to sprays — it can also be delivered in pre-saturated wipes, foaming solutions, or controlled misting systems. These formats align with infection control policies while still offering HOCl’s proven benefits.
Some healthcare facilities are also evaluating alternative delivery systems to help reduce airborne chemical exposure associated with aerosolized cleaning agents.
For professional-grade HOCl solutions, visit our School & Workplace Collection.
A Smarter Path Forward
Canadian hospitals face a clear choice: continue with harsh disinfectants that damage equipment, endanger staff, and encourage resistance — or adopt a safer, proven alternative. As concerns around occupational asthma, chronic respiratory disease, and antimicrobial resistant bacteria continue growing, healthcare facilities are increasingly evaluating hypochlorous acid spray as a safer cleaning agent for long-term healthcare environments. Hypochlorous acid offers the power hospitals need without the trade-offs.
Take the first step toward safer infection control. Contact us to learn more about how HOCl can fit into your facility.
Frequently Asked Questions About Hospital Disinfectants
Q1. Why are traditional hospital disinfectants like bleach and QACs risky?
A: Traditional disinfectants are effective but harsh. Bleach and quaternary ammonium compounds (QACs) can irritate the lungs and skin, corrode surfaces, and contribute to antimicrobial resistance over time. These drawbacks make them less sustainable for modern healthcare environments.
Reference: Public Health Ontario – Environmental Cleaning
Q2. What is hypochlorous acid (HOCl), and is it safe for healthcare use?
A: Hypochlorous acid is a disinfectant naturally produced by the human immune system. It kills bacteria, viruses, and fungi quickly — without toxic fumes or surface damage. It’s already used safely in hospitals, food processing, and childcare settings worldwide.
Reference: U.S. CDC – Chemical Disinfectants: Hypochlorous Acid
Q3. How does HOCl reduce occupational asthma and respiratory irritation?
A: Unlike bleach or hydrogen peroxide, HOCl does not release volatile organic compounds (VOCs) or reactive fumes. This makes it much safer for staff with respiratory sensitivities and aligns with research linking cleaning chemical exposure to occupational asthma.
Reference: ERS - Occupational Exposure to Disinfectants and Asthma Control in US Nurses
Q4. Can HOCl replace all disinfectants currently used in hospitals?
A: In many cases, yes — HOCl can replace bleach and QAC-based products for surface disinfection, equipment cleaning, and patient room sanitation. Hospitals may still use specialized disinfectants for high-risk biohazard tasks, but HOCl can handle most daily cleaning safely.
Reference: PubMed - Disinfection and Sterilization in Health Care Facilities
Q5. Are there restrictions on using spray bottles in hospitals?
A: Yes. Some infection control policies discourage open-air sprays to reduce aerosolization. HOCl can be delivered in safer formats like pre-saturated wipes, foaming dispensers, or closed misting systems, ensuring compliance without compromising safety.
Reference: Public Health Ontario - Environmental Cleaning
Q6. What cleaning chemicals are commonly linked to occupational asthma in hospitals?
A. Studies examining occupational asthma in healthcare settings often focus on bleach, quaternary ammonium compounds (QACs), hydrogen peroxide disinfectants, and aerosolized cleaning agents. Repeated exposure to strong disinfectant chemicals may contribute to respiratory irritation in some healthcare workers.
Q7. What are antimicrobial resistant bacteria?
A. Antimicrobial resistant bacteria are bacteria that become more difficult to control using antibiotics or disinfectant strategies. Hospitals continue monitoring organisms such as MRSA and C. difficile because they remain important healthcare-associated infection concerns.
Q8. Why are hospitals looking for safer cleaning agents?
A. Many healthcare facilities are evaluating safer cleaning agents to help reduce harsh chemical exposure, respiratory irritation, and indoor air quality concerns while still maintaining effective infection-control practices. Occupational health and environmental safety are becoming larger parts of healthcare cleaning discussions.
Q9. What is hypochlorous acid spray?
A. Hypochlorous acid spray is a disinfectant solution made using hypochlorous acid (HOCl), a compound naturally produced by the human immune system. HOCl solutions are used in healthcare, food processing, schools, and other environments because they combine disinfectant performance with a lower chemical burden than many traditional cleaning products.
Q10. Can hypochlorous acid help reduce harsh chemical exposure in hospitals?
A. Yes. Many healthcare facilities are exploring hypochlorous acid spray as part of broader efforts to reduce harsh chemical exposure while maintaining environmental cleaning standards. Researchers continue studying HOCl in healthcare environments because of its disinfectant performance and compatibility with sensitive environments.
Sources
- Health Canada – Infection prevention and control guidelines
- Journal of Occupational and Environmental Hygiene – Occupational exposure to disinfectants and respiratory risks among healthcare workers – Meta-analysis of asthma risk in cleaners
- Journal of Allergy and Clinical Immunology: In Practice – Healthcare disinfectant exposure and respiratory symptoms – Disinfectant use, asthma, and COPD
- PubMed Central – Healthcare worker disinfectant exposure and respiratory effects Healthcare-associated Infections and Antimicrobial Resistance in Canadian Acute Care Hospitals
- Public Health Ontario - Environmental Cleaning
- CADTH – Alternatives to traditional disinfectants in healthcare
- CDC – Chemical disinfectant risks in healthcare settings
- Boyce JM. Quaternary ammonium disinfectants and antiseptics: tolerance, resistance and potential impact on antibiotic resistance. Published in Antimicrobial Resistance & Infection Control (2023).
- Palau M. et al. In Vitro and In Vivo Antimicrobial Activity of Hypochlorous Acid against Drug-Resistant and Biofilm-Producing Strains. Published in Microbiology Spectrum (2022)
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