For the current Omnipod system, which uses 433MHz PDM-to-pod radio, you will need to use additional small hardware with two radios, serving as a bridge between bluetooth and 433MHz. It appears that the existing RileyLink hardware shown in the above post by @Lorraine will be able to serve that function.
For the future Omnipod system, which will use bluetooth, all bets are off. In theory, it may be possible to eliminate the need for the additional bridge hardware. However, no one has even looked at reverse engineering that system since it is not out yet, and we have no idea how easy or difficult reverse engineering the new system may be.