to NGA
Hmmm...
Oil (diluted with water) is often used as a dormant spray - they key word there being dormant. Dormant spray smothers any insects or eggs wintering over on outdoor deciduous plants. And plant leaf polish used to be popular but I don't think it did much for the health of the plants.
The best way to keep your plants happy and healthy is to keep them clean. A little soap and water goes a long ways. I think its time for you to use some soap and water on your house plants and get rid of the coconut oil. It probably is smothering your plants - I don't know for sure but oiling your plants doesn't seem like a good idea to me.
Daisy
