Your bathroom is one of the most common sources of indoor air pollution due the number of problematic spots.
Showerheads and faucets (especially ones that leak) can accumulate bacteria such as Legionella while mold growth behinds walls can occur due the moist environment.
When you do notice a problem you begin to clean. This can cause more problems as some cleaning products give off harmful off-gases (volatile organic compounds). When improperly vented, these gases can cause health effects just like the bacteria and mold you thought you were cleaning.
How to Improve Your Bathroom Air Quality
To improve air quality in your bathroom, keep these following tips in mind;
keep your cleaning products lids tight
routinely disinfect showerheads and faucet
open a window when using cleaning products
check your ventilation system to ensure proper operation