When I smell cleaning products, perfumes, scented lotions, cigarette/cigar smoke and other chemical scents, I begin to cough and become hoarse and loose my voice for many hours. At times, I feel as if I am having trouble swallowing and breathing, I have also had my lips feel numb. I have been told that it is not an allergy. I can take fast melt Benadryl and it will help with the symptoms except for the laryngitis. It is beginning to affect my job. What is your opinion as to what causes the symptoms? This has been going on for many years and it seems to be increasing in frequency.