We also have precedents to look at
Exposure to allergens such as pollen, dust mites, pet dander, and mold spores triggers allergic reactions, leading to increased inflammation, swelling, and congestion in the nasal passages and sinuses
The scent of decay followed by fresh air Common interpretation: Decay can symbolize release
US Department of Health, Education, and Welfare, Smoking and Health: Report of the Advisory Committee to the Surgeon General of Public Health Service, US Department of Health, Education, and Welfare, Public Health Service (1964): 33 Gardner and Brandt, The Physician in US Cigarette Advertisements, 230
the smoke is fine and smooth, with moderate concentration and strength