Poor air quality is a major source of bacteria, viruses, sinus disease, copd and allergies. If you wonder what you can do to help yourself with the negative effects I can recommend getting an air purifier.
Many air purifiers do not fit modern standards in air cleaning capabilities, however there are a few gems out there. On my website moaablogs.org I share tips and tricks how to select an air cleaner based on room size and your preferences for auto function, CADR, sleeping and so on and so forth.
Be sure to check out my reviews and guides as they will be of a much help for you!