What Are The Ingredients In Smoke?

It can vary depending on  nature of the burning fuel and the conditions of combustion.
Carbons are the most common ingredient of smoke.
Smoke can contain "Ash", hydrogen cyanide, ammonia, nitrogen oxides,  carbon monoxide, hydrogen chloride, phosgene, dioxin, and chloromethane, bromomethane, halocarbons,  Vanadium, nickel, aluminium, arsenic, chromium, cobalt, copper, mercury, selenium, and uranium.
All above ingredients depends on from what the smoke is generated and what were the combustion conditions-Severe combustion conditions can lead to more poisonous conditions. Smoke from cigarette will be different from smoke of chlorine and coal combustion. Similarly power plants and oil refineries also have different ingredients that make up their smoke.