sous vide kills off the botulism bacteria but not the spores which require 250 degrees to kill off, the spores are dormant and safe to eat but if left in an anaerobic environment btwn 40-126 degrees they can activate and start spewing out toxin which is no bueno, ice bath quickly chills the food to below 40 degrees much quicker than just shoving into the fridge
yup, but fly is trying to food poison april, so keep it on the down low