Ask Ausiello posted a “How I Met Your Mother” spoiler:

Question: I thought the HIMYM smoking episode was hilarious, but does Alyson Hannigan really smoke? —Joe
Ausiello: In a word, God, no! (Okay, two words.) “The smoking episode was horrible to shoot,” says the actress. “It was a funny script, but faking all that smoking was murder on my throat and eyes. They were fake cigarettes, but it was still really gross to us non-smokers.” More appealing to Hannigan is the idea of giving Lily and Marshall a baby. “I actually wouldn’t mind being pregnant on the show at some point,” she says. “And I think these characters are getting to an age where that just starts happening naturally. But it would certainly hinder the bar scenes. Pregnant woman in the bar drinking? Not so [funny]. Then the baby would get there and we’d have to figure out what to do with it all the time. It would separate Lily and Marshall from the group too much [which] would interrupt the camaraderie, which is the cornerstone of HIMYM. So I think, in the end that is what is truly stalling the baby. But if we get enough seasons, it would have to happen eventually.”