How to remove lillies from house safely?

Just ordered in a bouquet of flowers from Costco and didn’t realize lillies were in them… I didn’t see them until I unwrapped the bouquet.

I know lillies can cause intense harm to cats, and have heard even inhaling pollen is dangerous. I know I can’t keep them inside, but how can I remove them safely to minimize shaking off pollen?

For the time being I’ve stuck them in the windowsill over the sink, as it was only an arms length away from where I unwrapped them. I’ve also changed my clothes completely. I just don’t want them to come into any harm.