Similarly, if you eat krsna-prasada, then you will be infected with Krsna consciousness. Thus our process is that we don't eat anything directly. First we offer the food to Krsna, then we eat it. This helps us advance in Krsna consciousness. Yes, because Krsna is a vegetarian.
Tobacco is also an intoxicant.
We are already intoxicated by being in the bodily conception of life, and if we increase the intoxication, then we are lost. Suppose you have a disease and you want to be cured. You have to follow the instructions of a physician. This treatment is the process of Krsna consciousness. In India there are some selected places, very sacred place, and the yogis, generally, they go there and sit there alone in a sacred place and as prescribed in the Bhagavad-gita and perform there.