If you live where Fall is well underway, you may be experiencing an allergic reaction to rotting leaves - I live in Toronto and every time I go outside, my throat gets sore and my nose starts running. I've been on immunosuppressants for quite a while now - first methotrexate and now the Biologics - and have noticed that they seem to cause my histamine levels to get irritated, and increasing my allergy symptoms. 

I would recommend that you speak to your rheumatologist and/or ask your regular doctor for a referral to an allergist to get an allergy assessment.  You and your husband may also try taking an antihistamine and if that helps the symptoms, it's probably allergies.  However, being on medications that suppress your immune system does put you at risk for developing infections, so it's probably a good idea to get checked out, just to make sure that you don't have any residual infection hanging around.