For the statement of the following, explain whether or not you think that logos is being used effectively

"cigarette smoke contains over 4,800 chemicals, 69 of which are known to cause cancer, so why start smoking"

Yes, logos is being used effectively in this statement. The speaker provides factual information about the number of chemicals in cigarette smoke and the specific number of chemicals that are known to cause cancer. This appeals to logic and reason, making a strong argument against starting smoking.