4 mistakes to stop making on a plane, according to an etiquette coach

According to an etiquette coach, there are several things passengers should avoid doing on a plane. Alvaro Lavin Renteria/Getty Images Business Insider asked an etiquette coach what things passengers should avoid doing on airplanes. She said reclining your seat is OK as long as you're being mindful of the person sitting behind you. Avoid bringing smelly foods on board and giving parents dirty looks when their kids are crying. From holding up the bathroom line with your skincare routine to…