He can be quite shy. [ It's adorable really ]

[ Can't believe someone snuck in while they were busy to poison Wei Wuxian's flute ]

I do wonder if there will be a repeat but with a stronger dose. [ Wei Wuxian is talking like it's done and over with but they still have a night of being knocked out to look forward to. ]

We also don't know the full range of people's abilities so it may not even need to be applied to anything. [ Maybe it was a spell like in the popular JRPG Last Dream series ]