Short answer: Moisture can interfere with a vape’s electronics. Keep the device dry and follow its model-specific storage and cleaning instructions.

Visible signs
Condensation outside the device can be wiped from the exterior with a dry soft cloth. If liquid enters the charging port, the device leaks, or it activates unexpectedly, stop using and charging it.
What to avoid
Do not open a sealed housing, direct hot air into it, or pour alcohol into the ports. Contact the maker or seller for model-specific support.
For battery precautions, see the FDA battery safety guidance. Follow the instructions for your exact device.
FAQ
Will rice fix a wet vape?
It is not a reliable repair method. Stop using a wet or malfunctioning device and seek manufacturer guidance.
Can humidity alone prove a sensor failure?
No. A symptom can have several causes; avoid diagnosing internal components without the maker’s guidance.
Nicotine products are for adults of legal age and can be addictive. Keep them away from children and pets.