Depending on the quality of the chip repair and the location of the repair, it may not be visible. It depends on the quality of the repair and the fill materials used.

5 anti-fogging products for reducing window fogging in your automobile. Rain-X Interior Glass Anti-Fog, 303 Products Instant Windshield Washer Tablets, Armor All Fog-Glass Cleaner with Anti-Fog, Stoner Invisible Glass Anti-Fog, Never Fog by Bluemagic, Frog Spit

Tips for keeping your windshield from fogging:

Gravel Roads, Construction Zones, Potholes, Following Trucks Too Closely,