A 2-year-old boy has been praised as a hero after saving his family from fire by waking his parents who were unaware of the smoke because they had lost their sense smell due to the coronavirus, in the middle of the night. Nathan, 33, and Kayla Dahl, 28, who lost their sense of smell and taste after suffering from Covid-19, did not wake to the smell of smoke and their fire alarms did not go off. Their son Brandon who was sleeping in the living room, woke to the smoke and flames and got his mother to wake up. Kayla told Good Morning America; ‘He tapped me on my feet in bed and was coughing and s…