A cartridge (650) includes an atomizer assembly, a reservoir (658A), and a mouthpiece (652). The atomizer assembly may heat a vaporizable material to generate an inhalable vapor. The reservoir may store the vaporizable material and includes a wick housing (688) around an atomizer assembly configured to heat a vaporizable material to generate an inhalable vapor. The wick housing includes a headspace vent (6059) positioned at a proximal end of the wick housing. The headspace vent may allow air to pass from the reservoir. The cartridge also includes a vent rod (6061) positioned over the headspace vent.