For men and women of child bearing potential: agreement to remain abstinent or use protocol defined contraceptive measures during the treatment period and for at least months after the last dose of atezolizumab/placebo, or for at least months after the last dose of paclitaxel Agreement to remain abstinent or use adequate contraception, among women or men of childbearing potential Willing to remain abstinent from consuming alcohol. Agreement to remain abstinent or use adequate contraception, among women or men of childbearing potential Willing to remain abstinent from consuming alcohol while on DSF For women of childbearing potential: agreement to remain abstinent or use contraceptive methods For women who are not postmenopausal (>= months of non-therapy-induced amenorrhea) or surgically sterile (absence of ovaries and/or uterus): agreement to remain abstinent or use single or combined contraceptive methods as specified in protocol For men: agreement to remain abstinent or use a condom plus an additional contraceptive method as specified in protocol For women of childbearing potential: agreement to remain abstinent For men: agreement to remain abstinent Willing to remain abstinent from consuming alcohol while on disulfiram For men receiving BCG: Agreement to remain abstinent (refrain from sexual intercourse) or use a condom For women of childbearing potential: agreement to remain abstinent Motivated to remain abstinent ( or higher out of )