Water pails, buckets, and wash basins collect odors. Camp tables and chairs accumulate food scraps and odors.
Backpacks normally have attracting odors.
Food smells permeate your tent, sleeping bag, and other equipment. Carry enough clothing so that you don't need to sleep in the same clothes in which you cook and eat. Human sexual activity may attract bears. Plan to washup well after cooking, eating, or sex, and before retiring. The recognition of bear sign is one of the most critical elements of preventing an encounter with a bear.