Tell us: have you been affected by the spread of wildfire smoke in the US and Canada?

We would like to hear about the impact of the smoke spreading in the US and Canada. Photograph: Eduardo Muñoz/Reuters

The smoke from more than 100 active wildfires northern Ontario has spread to cities across the north-east US, including New York.

Environment Canada issued health warnings on Wednesday after the sky over Toronto turned yellow with smoke and was ranked the worst in the world, according to IQAir.