Q.My Houseplants Are All Dying Quickly
I only water when soil is dry and the plant is turning yellow and dying. There are no bugs on the plant. The same thing happens with fresh cut flowers. I am taking care of my 94 year old mother and I’m wondering if its because the house is too hot or if there’s something in the air?

Certified GKH Gardening Expert
Unless the house is over 90 degrees F, I don't think the indoor temp is an issue. Improper watering is the No. 1 issue with indoor plants. If the watering is correct, the drainage may not be. Are there adequate holes in the bottom of the container? If not, you can put a pot inside a pot, and the inner pot can have drainage holes. When watering, remove the inner pot to let water drain before returning to the outer pot.
Plants also need fertilizer. Be sure they are on a regular fertilizer program. You can use slow release granules such as 10-10-10 or the fertilizer sticks for convenience. Or use liquid fertilizer that you add to the water.
Another common problem is light. If the plants don't get enough light, they will suffer.
Here is more:
https://www.gardeningknowhow.com/houseplants/hpgen/reasons-houseplants-keep-dying.htm
https://www.gardeningknowhow.com/houseplants/hpgen/desperate-houseplants-dealing-with-common-houseplant-diseases.htm