My hot tub has a very strong bromine smell. Chemical levels are all fine tested with Taylor bromine kit. Ta -80, Ph level is always high every week but I bring back down to 7.4. Bromine level was at 7. I'm not sure what is causing it. With the jets on it can make you cough. I'm debating just draining. It's used 1-2 times a week (500gal) couple bathers. It was drained 4 mo ago. I also shock with mps.