My room had an offensive smell. More like ammonia. I’ve never had this reaction going anywhere. Immediately my throat, ears, and eyes had an allergic reaction. I had the desk clerk come up and she said she thought it was from previous ozone equipment. She witnessed my condition, due to my voice increasingly sounding like I had a cold. She could not move me due to no available rooms. Offered no solutions. I had to choose between breathing(Leaving) or staying and who knows what my condition would be by morning. I left. On my way to my new hotel, my symptoms subsided. It was definitely the room. FYI; It is an older hotel, she did confirm it had been a smoking room and had just had a deep cleaning. Whatever that assault on my nasal passages is, I could not tolerate.