What would cause my whole house of adults to feel dizzy and woozy for 3 days now? we all have the same few symptoms, dizziness, diarrhea off and on

Dizzy/diarrhea: Could be gastroeneteritis, could be mold could be carbon monoxide, (call the fire department today they will check for free in US)- open windows, Are you on travel? new place? May also be mycoplasma infection, legionella (old air conditioner) chlamydia lung infection f/u with doc urgent care

Most: probably food poisoning and dehydration. take plenty of fluids, rest and light cereal and bread foods and soups.