pox, smallpox
痘 centers on a specific eruptive disease: pox, especially smallpox. The meaning is tightly tied to the illness itself.
痘 combines 疒 (sickness) with 豆, which likely contributes the sound トウ and may have been chosen for its visual resemblance to pustules or its phonetic value.
The sickness enclosure 疒 wraps around 豆, which looks like a bean but here suggests small round pox marks. Picture a sickness that covers the body with bean-like pustules.
For トウ, imagine a toe swollen with a pox sore: toe -> トウ, and the sickness enclosure reminds you it's a disease.
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smallpox; variola
pockmark
chickenpox; chicken pox; varicella
smallpox
mpox; monkeypox
monkeypox; mpox
variolation
variolation
variolation
varioloid
cowpox; vaccinia
pockmark
love is blind; (when in love) even pockmarks are dimples
smallpox; variola
vaccine
outbreak (of pox)
smallpox vaccination; inoculation against smallpox
orf; contagious pustular dermatitis; sheep pox; scabby mouth
fowl pox