We recently flew JetBlue (November 2018) from BOS to RSW with my daughter and her newly diagnosed son with a peanut allergy. At the gate they let us pre-board early to wipe down trays, armrests, etc. In addition, when everyone was seated the flight attendant stated that someone in one of these rows ( 2 rows in front of us and behind us) had a peanut allergy and asked folks to please refrain from eating peanuts within the area. We were so appreciative of the way she handled it. Very professional and not drawing attention to who had the allergy. It was a seamless flight. Love Jet Blue!