Question

What does smoke contains ???​

Answer 1

Although smoke can contain hundreds of different chemicals and fumes, visible smoke is mostly carbon (soot), tar, oils and ash. Smoke occurs when there is incomplete combustion (not enough oxygen to burn the fuel completely). In complete combustion, everything is burned, producing just water and carbon dioxide.

Answer 2

dust particles and it contains corbon dioxide

that is why we feel suffocated in closed room where something is burning.