Yes—lightly wiping the camera body with isopropyl alcohol is generally considered safe. Camera and lens cleaning fluids often contain alcohol, and using a cloth or swab moistened with alcohol on the exterior should not harm the camera.

Key precautions:

• Don’t soak the camera or let liquid run into seams, buttons, or ports, especially on non-weather-sealed bodies.
• Keep a lens mounted while cleaning to reduce any chance of liquid or vapor reaching the sensor chamber.
• Alcohol vapor is unlikely to affect the sensor in any meaningful way during normal exterior cleaning.
• Avoid using ordinary alcohol solutions on the sensor itself. Some formulations, especially medical ones, may contain additives that leave residue, and isopropyl can streak on sensors.
• For lenses or sensors, use a cleaner specifically intended for optical/sensor cleaning if needed.

So: exterior body cleaning with a lightly moistened cloth is fine; avoid getting the camera wet, and don’t use general isopropyl alcohol directly on the sensor.