SIMBiont injection sound heard randomly, possibly from other players doing the contract

Video here: https://youtu.be/FasfKrJY7no

I've been hearing this randomly from time to time. Recently realized that this might be the SIMBiont injection sound effect from the Sekiguchi priority contracts. As you can see in the video, I was not the one doing this contract, nor was I anywhere close to where it is usually injected. It doesn't seem like this sound effect is intended to be heard by all runners.