Never enter agricultural or industrial areas that may contain high levels of ammonia without appropriate training and protection. If there is a large ammonia spill, evacuate the area and call the fire department. Liquid ammonia fertilizer is hazardous and must be handled with caution. Never mix ammonia-containing solutions with household bleach. Highly toxic gases are released.
Ammonia has a very strong odor.
If ammonia cannot be smelled, it is probably not concentrated enough to be harmful. If you can smell ammonia, health effects are possible. If strong ammonia odors are present in your home or environment, and if eye, nose, or throat irritation is occurring, leave the area and call the fire department. If someone has swallowed ammonia, call 911. Elderly people, children, and people with lung diseases, such as asthma or emphysema, may be especially sensitive to ammonia.