As an alternative, steep a handful of hot cloves in the water instead of lemon slices.

While your kitchen may smell like onions at first, this will help absorb the burnt smell. [8] X Expert Source Guy PetersHouse Cleaning Professional Expert Interview. 27 September 2021.

You can simply put out bowls of vinegar to absorb the odors. Heat the vinegar to make it more effective.

Another option is to bake a few tablespoons of vanilla extract at 300°F (148°C) for around an hour. [12] X Expert Source Guy PetersHouse Cleaning Professional Expert Interview. 27 September 2021.