Is your N95 mask working overtime? Do other masks work against the haze?

😷 Be honest — have you been reusing your N95 mask? If it's looking grubby and bent out of shape, it may be past its prime. How many times can you reuse it and are other masks as effective? Here's what to know to stay safe in the haze. Read more: https://cna.asia/4ynClN2 #haze