How much of the air you're breathing is air someone else exhaled? And in the midst of a pandemic caused by an airborne virus, where are the riskiest places to be? In the first in a series of five stories, Farah Hancock reports on hot spots of hazardous air.

In an unscientific survey, RNZ used a portable CO2 monitor to record readings from a variety of places around Auckland. Here are the results - and Rindelaub's reaction to the highest reading taken in each location.

The full report can be viewed directly on RNZ’s website by clicking here.