 [ Symptoms ] i think i have chronic sinus infection my breathing through nose has always felt congested for years and i also have bad breath the mucus from my sinus are often bright yellowish i have never noticed that my nose breath smells until i started regularly using neti pot squeeze bottle version since then i can smell my bad nose breath because the smell would fill up the area i am at there is no pain or discomfort unless i have a cold it seems that i can smell it most right after i neti pot what can i do [ Disease ] first possibility is lyme disease as u discribed it started by red pump look for signs as headache and fever use doxycycline if non then it could be hiv infection which can lead to aids usually body can fight it alone but take it seriously my assumptions are based on posdiblity that you had a mosquito bite or some insect bite could be just contact dermatitis if your sure you have not been bitten by any insect also look for sore throat and fever if non you are safe