How can the description of the creation of Jesus from dust, like Adam, be reconciled with the blowing of the spirit into him in Mary's womb? And does the description of the spirit as "from Him" mean that it differs from the spirits of other human beings, or is it for honorific purposes?

Allah likened the creation of Jesus to the creation of Adam because Jesus was created without a father, just like Adam, not because he was created from dust like Adam. Both were created by Allah through His power with "Be, and it is," so that Allah might manifest His power in His creation. Thus, He created Adam without a father or mother, He created Eve from a male without a female, He created Jesus from a female without a male, and He created the rest of creation from a male and a female. The duration of Mary's pregnancy with Jesus was like the usual pregnancy of women, and it is well-known that she carried him for nine months.