Mick literally waved Pete's offer away. He was trying to have some self control. He even would go so far as to turn away as Pete lit the thing. Just a momentary spark could be entrancing and he was trying to muddle through without. (At least, for the time being.) The bar would thank him for it.
The bartender circled back around and Mick motioned for another round. There was no sense in turning down a free drink and Pete seemed agreeable enough. Mick hung out with all sorts and while he didn't have problems with people being loud and rowdy it was possible to end the night without broken glasses and fist fights.