Starting March 15, 2016, visa-exempt foreign nationals who fly to or transit through Canada will need an Electronic Travel Authorization (eTA). Exceptions include U.S. citizens and travellers with a valid visa.Read about the changes and how they may affect you.ind out what you need to visit Canada as a tourist or business person, how to extend your stay in Canada and what documents you need to carry with you to transit through Canada.
Normally, urine that contains a lot of water has little to no odor. If your urine becomes highly concentrated â a high level of waste products with little water â urine odor may have a strong ammonia smell. Many foods and medications, such as asparagus or certain vitamins, can affect the odor of urine. Sometimes, unusual urine odor may indicate a medical condition or disease, such as: Bladder infection.
âIf some of the urine is not removed from the litter box, it will eventually collect on the bottom of the tray underneath the litter and form bacteria that emits a very strong odor. If a cat urinates on the floor, the same process can occur, leading to strong bacteria-driven odors.â.