HEPA Quiet Air Purifiers
If you have severe allergies and noise is an issue, then your best bet is to use one of the reasonably quiet air purifiers that use a HEPA filter, such as the Blueair air cleaners.
If you have severe allergies and noise is an issue, then your best bet is to use one of the reasonably quiet air purifiers that use a HEPA filter, such as the Blueair air cleaners.