Can you omit "egy" here? It seems like sometimes you can, sometimes you can't.
Yes, you can here.
Still doesn't accept "dohányzik" as valid sigh
It does now.
It should accept all of the following: "cigarettázik", "cigizik" and "dohányzik". It doesnt...
Are you allowed a second "ő"?
Theoretically yes, but the sentence doesn't need it. We don't say it.
Thanks.