My house plants bad reaction to air

I recently started doing some gardening and putting house plants in my home. I think that they bring a great aesthetic to the house. House plants are also a great way to purify the air in your home. Before purchasing any new plant, I will do extensive research on the plant. For my birthday, I received a fiddle tree inside my house. I was so excited to put the tree in a new pot and watch it grow. The plant, however, had different plans. Shortly after repotting the new plant, I noticed brown spots on the leaves. I thought that maybe I was not watering it enough or it was not getting enough sunlight. I moved to plant to a sunnier location. The plant was right under an air vent. With the air conditioner kicked on, this would rustle the plants leaves. The air conditioner was coming on several times throughout the day due to my family setting the temperature on the thermostat very low. I did not think that the air vent would bother the plant too much. A few weeks later, all of the leaves started falling off of the tree! I was so upset. I did some more research to find that this kind of plant does not like the air blowing on them from the air vent. I was starting to think that this plant was never going to recover from being in an unpleasant setting. However, I know that it is possible for a plant to come back to life with no other issues.