Apparently some people have experienced problems with some house plants after spraying with Neem Oil products (the dose, maybe?) while others have not had any problem. Any oil product that could keep the plants leaves from doing what leaves do, photosynthesizing, will cause problems.
I would start pest control, if needed, with a sharp spray of water as needed, followed by an Insecticidal Soap if that does not help. Starting with a very potent poison leaves you with little else to try.

I am very pleased with a mixture of joy, neem and water. My mix is 25 drops lemon scented joy/1 tsp green light 70% neem and the rest water in a 24oz spray bottle. I spray once every 5-7 days. No sign of bugs and my Alocasias were infested with spidermites around 3 weeks ago when I brought them in. I've used the same neem and rotated it with joy for the past 2 years on my impatiens and never had a problem. Frost got them this year but I still have some seeds;)

Joy is a detergent that is known to do harm to plants if not used with care. Adding something like that to a Neem Oil product is not necessary, anyway

If this helps -

Kentucky Ag:
Common Name (Trade Names):Insecticidal soap (M-pede, Safer, Ringer Attack)
Pests Controlled: Aphids, lace bugs, leafhoppers, plant bugs, mealybugs, mites, scales, thrips, whiteflies
Safe plants: Flowers and bedding plants
Sensitive plants:Do not use on azaleas, begonias, bleeding heart, camellias, crown of thorns, fuchias, gardenia, impatients, jade plants, lantana, lillies, palms, or sweet peas. Do not use on transplants or root cuttings. Test on euphorbias, chrysanthemums, dracaena, dieffenbachia, ivies, palms and succulents before using.

A similar listing of sensitive plants is NOT included with the Neem description. Vegetable oil of course isn't there.

Here is a link that might be useful: Neem, Insecticidal soap cautions