This article is from the Chihuahua Breed FAQ, by email@example.com (Melinda 'Bob' Casino) with numerous contributions by others.
Generally, no. Be careful when walking your Chihuahua to keep your
Chi well away from toddlers and young children, who are often
uninhibited and will approach your dog.
Again, this is general good advice; some Chihuahuas are friendly
around children (usually as a result of de-sensitization). In this
case and others, the master's knowledge of his or her Chihuahua and
good judgement should prevail.