In 'Cursed', Artyom is tasked with destroying the tunnel and airlock where the nosalises (mutants) are spawning from.

Position yourself so Khan and the defenders are behind you for the following directions:

The bombs are at the end of the right tunnel.

Destroy the left tunnel by "using" the glowing bomb hologram on the tunnel supports at the dead end.

Destroy the airlock by going up the stairs and using the bomb holographic on the supports. The stairs are to your right (and a little forward), if you are standing with Khan and the defenders at the station's entrance.