Charles gives over his half bared arm. "No, but it does take a little more for them to have an effect." He has a very active mind by comparison to the average human being.
"Hmm...these projections, they're still part of the person dreaming though?" If that was the case, Charles could probably control them much like any other part of a person's mind with his telepathy. Likely they wouldn't be a problem if it came to that.