2. Mould
When you hear the word mold, chances are that your mind immediately thinks, disgusting and that there is no way that you have mold in your home. However, it is important to check for mold, especially in places that you may not think about very often.
Mould is a much more common issue than most people think. It may appear by a leaky sink, underneath wallpaper, on a ceiling where a leak may be undetected, underneath your carpet after something is spilled, on your blinds or curtains, and it could even be on the clothes in your closet. If you are having trouble determining a specific reason for your chronic sinusitis and you live in an area that is damp or humid, start looking around. Some mold is not visible to the naked eye, so you may want to hire a professional to come to investigate your home.