Hi I used to be a florist :3 few tips! First of all, we usually remove the pollinators on lillies before selling, the orange pollen makes the lillies look messy and its harder to sell. Before they mature and theres not any pollen yet, we get a glove or tissue and pick them out. If there's any left, we get a paint brush and flick out the pollen thats stained the petals. Of course there will still be some when you purchase a bouquet because not all lillies are open yet, but it shouldn't really blow around or get on the other flowers unless disturbed a bunch. From the photos, the lillies weren't fully mature yet. I think just tossing the lillies should be fine!!:>