I found TPF when I first became the owner of a pool. Thank you all very much. I have been using liquid chlorine ever since. The previous owner left a bucket of pucks. Over the last two years, I have never used those pucks. Since my wife and I are now vaccinated, we took a trip to see one of our nephews graduate. I placed some pucks in a floater for when we were gone. After I returned, I removed the floater and allowed the pucks to dry and then I placed the pucks, inside the floater back in the bucket (with cover) which is located inside a suncast storage bin. Now whenever I walk by the bin and especially when I open the pin not to mention when I open the bucket of pucks, I get a very strong smell which I believe to be chlorine gas. I don't see yellow air and I'm not dead yet. How could pucks which were stored for at least 2 years now be so toxic?