we're hearing far too many stories like that of adam. he is 18. doctors say he has the lungs of a 70-year-old. now at least adam is alive. six people are not. and there are hundreds of cases being investigated across this country, and it seemed the president was leading the effort to check vaping and e-cigarettes by saying this just yesterday. >> don't vape. we don't like vaping. i don't like vaping. >> now he says he does like vaping as an alternative to cigarettes. here it is in his own words. why i like the vaping alternative to cigarettes we need to make sure this alternative is safe for all. so he doesn't know if it's safe, but he likes it as an alternative? my next guest is gregory conley. he is the president of the american vaping association. welcome to "prime time." >> thanks for having us. >> so give me some inside scoop