Get ether instead - any pharmaceutical supply house can order a pint for you. Tell them you need it to get tape off your leg if they ask, which they may. Or tell them you want to simulate a chroroform skullride but don’t think he will order it for you, even though you’ve got an extra $20 if he does. What’s the harm? Honesty is best. He might order you methyl ether instead of diethyl, though, as pharmacologists have an odd sense of humor. Hmmm…. I bet methyl either would actually be an interesting substitute for chloroform….