Yes, the Alto doesn't leak or build up
much condensation, but definitely does it. I've never had to use alcohol, but routinely use a q-tip to clean any condensate. Usually, though, it just seems weaker than normal when it's a little wet- but doesn't stop completely.
Occasionally, a quick, sharper than normal draw will activate a pod that doesn't seem to be working, then it's fine after that.
I've been using them for quite a while (but mainly use
rta's), and never had a complete dud, though. So try another pod, and if doesn't work, it's almost certainly the battery unit. They do give free certificates for warranty issues. About a year ago, pods were tasting burnt halfway
thru (common problem back then), and they sent me coupons for freebies.