I had previously allergic asthma when inhale strong perfume i had a cold and dry cough, I'm worked outside and used hand sanitizer recurrent while in my duty time, since 1 month i had a post nasal bloody mucus swallowing back in to the throat in that time i feel metallic taste, i checked corona rapid test is negative on that time nasal swab stick contain blood , no any other symptoms,when lack of sleep i had mild dry cough SOS, I used antibiotic also but not cured, problem with inhaled sanitizer while rubbing hands or any other plz clarify and what remedies i will take?