Apparently you can
.Smoke Your Weed In A Homemade Bamboo Bong - RQS Blog
Learn how to smoke your weed in an eco-friendly, high quality, homemade bamboo bong that will make your highs even more exciting and pleasurable.www.royalqueenseeds.com
Bamboo smoke has da toxins, be careful folks
"Bamboo contains lead and other heavy metals like chromium, arsenic, cadmium, copper, nickel. Burning of bamboo produces Lead Oxide and other toxic oxides in gaseous form which are harmful if inhaled. So bamboo should not be burnt."
BURNING OF BAMBOO - Sentinelassam