BluejayJunior
Explorer
Disagree. "the creature spends its action that turn retching and reeling." Hence the creature has wasted its action or, put another way, it is deprived of taking real actions outlined in the PHB. Hence no bonus action per PHB rule that [MENTION=1207]Ristamar[/MENTION] quoted.
The creature still has it's action, it is just being forced to use it in a specific way. That way may be wasteful, but it isn't being mechanically deprived of the action. The Action is still being taken. Stinking Cloud does not "deprive you of the ability to take actions" even though the action you take is not beneficial.