As Bangor inches closer to taking a vote that would make it the first community in Maine to ban flavored tobacco sales, supporters and opponents of the measure are digging in their heels in a debate between health advocates and those who see a ban as ineffective and punitive to businesses and adult users. The Bangor City Council is expected to vote Monday on a measure that would ban the sale or marketing of all flavored tobacco products in the city — including menthol cigarettes and e-cigarette flavors that have a taste or smell other than that of tobacco — on Jan.