Fabric softener on clothing can provoke a lot of nibbling and scratching to try to find out what smells good enough to eat. Always talk to a bunny to let them know who you are and where you are before you pick them up or reach into their cage to avoid startling them. Rabbits sleep with their eyes open so they may be napping when you approach them and think you are a predator. Just a tap on the the cage and a pleasant hello should bring them about facing you. Once they are facing you, pick them up.
Little children have food in their hands at some time during the day.
If a bunny smells something sweet he is going to be apt to taste it.