In Florida, cockroach allergens can stick around long after the roaches...

https://mike-wiki.win/index.php/Why_Do_Palmetto_Bugs_Show_Up_After_Heavy_Rain%3F

In Florida, cockroach allergens can stick around long after the roaches disappear, affecting asthma symptoms year-round. Even tiny particles in dust can trigger flare-ups, making it important to keep your home clean and dry