Yes, the chlorine tablet shortage. Goldman Sachs noting that this is what is the byproduct of a fire at a biolab facility last summer in Louisiana. This particular facility was one of the largest makers of chlorine tablets. Now it is starting to ripple across the market, just ahead of diving-- summer diving season in one's pool.
And apparently there is also a chlorine shortage. Someone posted a bit ago about it...
https://greatawakening.win/p/12iNQ7y9nW/tho-i-doubt-anyone-here-needs-co/
Interesting that about a year ago that just "went up in flames" right as covid was heating up.