Scents are subjective, and some scents are intolerable to people due to allergies or sensitivities. If you are going to wear cologne or perfume, use it very sparingly. A little bit goes a long way, so just a small spritz will do.
You should also be aware that some universities and workplaces have adopted scent-free policies to prevent allergic reactions. If you don’t know if there are scent-free policies at your medical school, then be cautious and avoid wearing scents altogether.