Is there a monster lurking inside your tires?
Tubeless tires are not maintenance-free. The sealant needs to be checked at least every 6-months.
When your sealant dries up, in addition to leaving a foul aroma, it prevents added sealant from sealing punctures.
Don’t let the evil sealant monsters bit you this spring. Go see your mechanic, and slay the monster lurking in your tires.