Is vaping better than smoking? Is secondhand vapour harmful? We're taking your questions about vaping

We've received a lot of questions from readers and viewers during ourspecial series Vape Fail, which has beenexamining some of the policy failures that led to the adoption of vaping as a smoking alternative and the resulting consequences on public health.

This afternoon, The National's co-host Andrew Chang is taking your questions on Facebook, YouTubeand Twitter starting at 2 p.m. ETwith Tereza Martinu,a lung transplant respirologist at Toronto's University Health Network,and studentanti-vaping activist Cameron Prosic.

Ask your questions on The National'sYouTubechannel,Facebook pageor Twitter feed.