Theres no need to, but....
You can foliar feed soluble kelp, Epsom salts. There's a product called optic foliar overgrow that's pretty good (but very simple to make yourself)
Fulvic acid can be foliar fed, and has great benefits. Hmmm what else. Chitosan....
Of coarse worm casting tea....
Bad things can happen fast when foliar feeding. You can also cause yourself other issues like mold etc if you don't have adequate air flow, and maintaining optimal rh% levels. Dont spray often. Maybe once a week/2 weeks. Less is more.