How does proper ventilation influence indoor air quality in a salon?

• A. It increases odors.
• B. It reduces buildup of chemical odors and airborne contaminants.
• C. It has no effect.
• D. It worsens exposure.

Answer: (B)

Ventilation lowers indoor air contaminants by exchanging stale air for fresh air, diluting and removing airborne chemicals and odors. In a salon, this means fumes from nail products, hair dyes, sprays, disinfectants, and other chemicals are carried away more quickly, reducing the buildup of odors and exposure for clients and staff. Proper ventilation often combines general air exchange with localized exhaust near chemical stations to capture fumes at the source. This is why the correct idea is that ventilation reduces buildup of chemical odors and airborne contaminants. The other options contradict how ventilation works: it doesn’t increase odors, it isn’t without effect, and it doesn’t worsen exposure when properly designed and used.