Bertie_Woo t1_irnkfir wrote on October 9, 2022 at 4:59 PM

Reply to comment by smugbox in Your annual reminder that if your apartment has a radiator, don't open and close the valve. This can create condensation in the system causing a knocking sound. Radiators are designed to be used with a series of open windows to balance heat. by emeyer94

I also have issues with nose bleeds and in my case air purifiers help too. Furniture and beds can locally harbor dust mites even in dry apartments and cause irritation.

This also led me to discover ultrasonic humidifiers produce a smoke-like level of fine mineral dust.