I was accidentally consuming small amounts of mold daily for over a month last year. i haven't gotten sick one time since then. coincidence or did mold actually build immunity?

pretty much as the title says. last year i noticed a ton of mold in the bottle of a chocolate sauce i was using to make my coffee every day. i stopped using it immediately of course and never noticed any negative side effects of consuming mold

but since then, i haven't gotten sick with even a cold despite usually getting sick 2-3 times a year. i even work with children and went the whole flu season without so much as a sniffle

wondering if this is just pure coincidence or if consuming small amounts of mold actually boosted my immune system in any perceivable way