Britney Spears has invested in a lung-cleansng device after being forced to walk off stage during a foggy concert in Vancouver earlier this month after suffering smoke inhalation.

The Princess of Pop recently shelled out $28,000 for a hyperbaric chamber so she can cleanse her lungs after performing, according to a Star Magazine insider : “There’s always a lot of smoke on stage effect. Britney’s been complaining lately that she can’t breathe.”