the correct approach

[Guido]

say you play a mtt

you have a flush draw on turn

villian goes allin , you get slightly the right odds to call but if you miss your flush draw you are out of the tourney

what is More important to you ?

surviving or taking the slightly +ev calling off decision

[1Peter510]

Generally I fold in marginal spots during a tournament (chips you lose are worth more than chips you win).

I also tend not to call off with draws preferring to be the aggressor where I have fold equity to add to my draw equity.