The cumulative draw of a group of people increases farther back in line. Its essence laces the breath and exudes from skin pores, masking your lunch call. Drink teas of local aromatic herbs. You'll smell like you belong. They rev up the metabolism, which sends out louder invitations.
Mosquitoes are obsessive about keeping their wings grease-free.
Teas of the above will work also, but lose effectiveness when they dry. Sweat keeps them active. Smoke skin, hair, and clothing. Avoid scented personal care products and laundry detergents. They are seductive perfume to Mosquito when activated by body heat.