Despite the very well known fact that wraith preferred little to no affectionate gestures, he was not going to slap her hands away. This was important, and it wasn't like she was going to run through the ship tomorrow bellowing at the top of her lungs "the commander held my hand!"

But he was the logical one.

Powers didn't just up and disappear for no reason.

"Can you turn it back on?" he asked. Perhaps the enzyme wasn't blocking her ability but just giving her the power to control the switch so to speak?