Yasmine Tornbald is allergic to nuts. Her allergy is so severe that she can go into anaphylactic shock from just smelling them.
Her dog, Nano, is a life-saver.
Nano, a 4-year-old poodle, has been trained to detect nut odour traces in both food and the environment. He's the first dog to be trained by the Buckinghamshire, UK non-profit organization Medical Detection Dogs to help check for nuts.
"It's given me a bit of independence back," Tornbald, from Malvern, Worcestershire, England, told BBC News.
"Normally when I stay at a hotel I start by cleaning out the room to be sure that there is no contamination — now I have Nano to double check. I can't imagine life without him now," she added.
Watch their story at BBC News here.
Now other allergy sufferers are asking about medical detection dogs.
"The difference it can make to a client who is suffering from a condition like this is very exciting," Medical Detection Dogs' Simone Brainch said.
The charity made headlines earlier in the year for training dogs to "sniff out" cancer.