Right now it seems the plant is in need of humidity. Make sure to bag it ASAP. After it has been bagged for about two weeks you should slowly start to cut away at the bag to let it adapt to the humidity. Once enough holes have been poked you can remove the bag. By then it should be healthy and have adapted to your conditions. I received a plant exactly like this, which now has growing strong ever since I removed the bag. Make sure you keep a good eye on the plant and cut away at the bag less often if the plant appears to be recovering slowly. Alcohol should only be used for pests with a mixture of water to act as a buffer so the small alcohol atoms don't burn the cells responsible for absorbing H20 from the outside air. As far as I can tell you do not have an infection or a pest, just an adaptation issue.