Safe naman ang humidifier for babies, especially pag ang air sa bahay ay sobrang dry, maraming nanay friends ko gamitin para sa cough at congestion ng kids! But with essential oils, mas kailangan maging careful kasi some oils can irritate their little lungs, so better check with your pedia first kung safe for your 2-year-old, what oils, at ano proper dilution. Plain water lang sa humidifier is honestly the safest bet para sure, or ask your doctor kung alin talaga best for your baby's needs.