Maybe If you are smoking near your gurilla grow you could tip your "clean" bong water over your plants. I used to do it after a session around my plants. A good nutrient enriched water is the best thing for your plants, Not dirty old filter water (but small ammounts wont hurt)... Something I have never done though is blow smoke over my plants, the smoke is filled with copious amounts of deadly compunds that will make your enviroment toxic not only for your plants but for youself. I talk to my plants to give them good c02. Smoke contains heaps of things like carbon monoxide and carsonogenics (cancer causing cells).
Cheers kwaka
P.s. in short Feeding your plant bong water isnt a done thing nor is it recomended.