The MAPIR group at the University of Malaga have recently released GADEN, a ROS pkg for 3D Gas dispersion simulator intended to enable simulation of mobile robot olfaction, using realistic models of gas sensors. Have a look at the corresponding paper on GADEN, it's open access.
Integrating GADEN into NRP would be absolutely awesome, because it would allow us to carry out simulations for gas-based robot navigation. But the real killer feature is that, due to the NRP's unique capabilities, it would also enable us to simulate mouse and human olfaction, using actual spiking networks to process chemical information. Needless to say, this could create a "unique selling point" for NRP.
The authors of GADEN have published their pkgs on github. Unfortunately I'm still a beginner in ROS and have a hard time judging whether it would be feasible to get GADEN running within NRP. Maybe one of the NRP developers could have a look at the pkgs and give me a hint whether it would in theory be possible to integrate GADEN into NRP?