Mo. Rev. Stat. § 441.010
No covenant or contract to repair shall impose upon a tenant the obligation to rebuild or repair any building destroyed by fire without the procurement, connivance or neglect of such tenant, his agents or servants, during the continuance of the term for which such building was leased or let, unless such tenant shall specially covenant or contract to rebuild or repair, in case of the destruction or damage of such building by fire; and no action, suit or process shall be maintained or prosecuted against any tenant or other person, in whose house or apartment any fire shall accidentally begin or take place; nor shall any recompense be made by such person for any damage occasioned thereby, any law, custom or usage to the contrary notwithstanding.
§ 441.010, RSMo