What the real concern here would be is the consumed diet where the urine came from. I would be worried feeding a plant where the diet consisted of junk foods (soda, fast food, processed foods) because of the amount of toxins and preservatives. I could imagine these compounds affecting plants negatively.

On the other hand, if you are eating a very regular and "clean" diet (organic & fresh meats, veggies etc) I see nothing wrong with feeding the plants with diluted urine. It still may scare some away, but urine is sterile when it leaves the body and is not harmful to plants in low amounts. To boost vegetative growth, feed with diluted urine once every other week. (1:5 urine/water). Plants respond positively and have never shown signs of distress. Don't feed urine in the flower cycle, so it can be flushed out of the plants system.

Buds fed with urine do not taste any different than buds growth without urine. Most ferts have bat guano, sea bird guano, blood meal, bone meal, and various other manures anyways. Is a little urine really going to hurt???