why would a hotel care if you are vaping in your hotel room

Hotels care about vaping in guest rooms for several important reasons, even if it's "just vapor":

Fire Safety & Alarm Systems:

False Alarms: Vape aerosol can trigger extremely sensitive smoke detectors (especially optical/ionization types), causing disruptive and costly false fire alarms. This evacuates the building unnecessarily, frightens guests, wastes fire department resources, and can incur fines.

Tampering Risk: Guests trying to disable detectors (e.g., covering them with plastic bags) to vape creates a severe fire hazard.

Residue and Damage:

"Vape Film": The propylene glycol (PG) and vegetable glycerin (VG) in vape liquid leave a thin, sticky residue on walls, ceilings, furniture, fabrics (curtains, bedding), windows, mirrors, and ventilation systems. This residue attracts dust and grime.

Cleaning Costs: Removing this residue requires significantly more time and stronger cleaning chemicals than normal turnover cleaning. It increases labor costs and delays room readiness.

Odor Absorption: While less pungent than smoke, vape flavors (especially sweet or strong ones) can linger in soft furnishings and require deep cleaning or replacement.

Long-Term Damage: Over time, residue buildup can damage paint, wallpaper, and finishes, leading to premature refurbishment costs.

Health and Comfort of Other Guests & Staff:

Air Circulation: Hotel HVAC systems often recirculate air. Vape aerosol can travel through vents or under doors, entering hallways and potentially neighboring rooms.

Guest Complaints: Non-vaping guests (especially those with allergies, asthma, or sensitivities) may detect the odor or residue and complain, demanding room changes or refunds. Hotels prioritize comfort for all guests.

Staff Health: Housekeeping staff, spending hours cleaning rooms, are exposed to higher concentrations of any residues or lingering chemicals, potentially causing respiratory irritation.

Legal and Insurance Compliance:

Local Laws: Many cities, states, and countries have laws prohibiting vaping in the same indoor areas where smoking is banned. Hotels must comply to avoid fines.

Insurance Policies: Hotel insurance policies often have clauses related to smoking/vaping. Violating these policies (even unknowingly allowing vaping in non-smoking rooms) could jeopardize coverage or increase premiums.

Designated Areas: If the hotel has designated smoking rooms, allowing vaping elsewhere undermines their system and confuses enforcement.

Policy Enforcement and Fairness:

Consistency: Enforcing a strict "no smoking" policy is much harder if vaping is tolerated. Guests who smoke traditional cigarettes see it as unfair and are more likely to smoke in non-smoking rooms.

Defining "Smoking": Most hotels explicitly define their "no smoking" policies to include vaping and e-cigarettes to avoid ambiguity and ensure clear enforcement. Allowing vaping contradicts this policy.

Reputation and Reviews:

Guests who experience issues from neighboring vapers (odor, perceived health effects) or find a sticky room are likely to leave negative reviews, harming the hotel's reputation and future bookings.

In essence: While vaping may seem harmless to the individual user, hotels view it through the lens of operational costs (cleaning, damage, false alarms), legal compliance, guest comfort for the entire property, staff well-being, and maintaining clear, enforceable policies. The potential for damage, disruption, and extra expense makes it a significant concern for hotel management.