Honestly, I'd check with your baby's pedia first before using any diffuser around a 3-month-old, kasi ang respiratory system nila is still super delicate at maraming pediatricians ang cautious pa rin sa essential oils for that age. A few of us mums go the safer route, mosquito nets sa crib, long-sleeved clothes, at mosquito coils placed far away from baby instead, so mas peace of mind talaga.