Perhaps you've developed an allergic reaction to chlorine, which is a strong oxidizer. I've seen AF can be triggered by food and other allergies.
Oh heck yeah i know that one...clorox is a biggie, certain floor waxes, certain cleaning agents like Tilex...i remember those all too well where they threw my heart into a complete and irregular heart beat to the point i almost passed out...the best thing i could do was to get outside away from the fumes and breath in fresh air and then they subsided. Another super bad thing is grouting for tile...just as bad. Maybe thats why all of the containers say that you are supposed to make sure the area is super well ventilated....the really bad mix which can actually cause death is when you mix clorox and ammonia together like in the toilet....i have read that the vapors of that can kill people quickly in an enclosed area but i am not sure if it was a heart related death that happens or not...man o man was that a positive post....i don't think it has to do w. sensitivity i think it is just people who may have underlying heart issues..but i could be wrong i do know now i no longer use any bleach or specific cleaning agents in the house...i found out the hard way.....