All with the haze ard, any advice if there is any available mask for the LO (say 5mths) if it is inevitable to step out of the house? Understand the best is to stay at home.

As with what the rest have mentioned, masks make breathing difficult for babies and young children. In addition, you will need a mask that is effective in preventing exposure to small particulate matter that are PM 2.5 microns, and there isn’t any available in the market suited for babies and toddlers. For babies, it is recommended to keep them indoors (in air-conditioned room) when PSI is above 100.