His stress is one cause of his health problems.

Smoking increases the risk of carcinogenesis.

He sucked in the juice with a straw.

This machine has a strong suction power.

Smoking cigarettes is not good for your health.

He quit smoking tobacco.

He was reading the newspaper while holding a cigar in his mouth.

Smoking while walking in public is a breach of manners.

He has a habit of smoking tobacco every day.

This food may contain carcinogens.