Every morning whenever we are having a meeting with the team there is someone who silently farts and disturbs the flow of the meeting. Some days it's so bad we have to vacate the room. I have discussed this issue with manager but he ignores it. For me it becomes unbearable sometimes.
How do I deal with these daily meetings?
Not a duplicate of this question since we don't know who is the one farting.
Split your morning meeting into two sessions. Rotate the team members in each session until you figure out who's farting.
You said everyone had to leave the room once because of this. So it looks like everyone is aware of this issue and not too ashamed to admit that it exists.
When something like that happens again (e.g. everyone leaves the room or someone mentions bad smell) you could say something to all your colleagues, like: "I know it's an awkward thing to talk about, but please, whoever does that, could you please try to restrain yourself from it? If it's not possible, you might want to visit a doctor."
It might be hard to find out who does that, but it's not that important. Either this person is unwilling to change it because they think it's fun, or they have some health problems and simply can't control it. In any case, there isn't a lot you can do.
Of course, selecting a meeting room with big windows can help as well.
For me it becomes unbearable sometimes
Stand up, say "Excuse me", cover your nose with a handkerchief and walk out every time. Except that, there's really nothing much you can do. 1.
Additionally, walk-in with a bottle of room freshener (and depending on your understanding level with your manager - ask them to have you reimbursed for the cost of the same), and use it whenever you re-enter the room after some time.
Continue this, and hope that the person(s) guilty of the act will understand and rectify the behavior.
1: As you already tried taking this up with your manager and they did not seem to be bothered.
