My husband is suffering nearly every day from really painfull headaces and a sicky tummie hes a cheff and uses the grill can heat from the grill cause?

Maybe, maybe not: Headaches can be from a number of things, including migraines (triggered by something), viral infections (cold, flu, etc.), sinus congestion (sinusitis, allergies, etc.), stress (tense muscles, tense neck, etc.), medications, other "drugs" (drug withdrawal, caffeine effects, etc.), hydration changes, blood sugar changes, fumes (smoke, carbon monoxide, etc.), rare tumors, rare aneurysms, etc...