The 4-way chimney type roof vent worked well for this as the warmer humid air would rise. If I don't do this I add at least one small vent up high as an exhaust vent, good for hot or cold weather use. Both may encourage any scent to go upwards too unless there is a temperature inversion or down drafts.
Insulation also reduces condensation so might help with your use too. Spray foam is ugly but easy.
"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli
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