Does Florida have a Good Samaritan law similar to Missouri?
I don't know about Florida, but Missouri's law doesn't apply to regular people -- only health care professionals or as noted here:
Emergency care, no civil liability, exceptions (Good Samaritan law).
537.037. 1. Any physician or surgeon, registered professional nurse or licensed practical nurse licensed to practice in this state under the provisions of chapter 334 or 335, or licensed to practice under the equivalent laws of any other state and any person licensed as a mobile emergency medical technician under the provisions of chapter 190, may:
(1) In good faith render emergency care or assistance, without compensation, at the scene of an emergency or accident, and shall not be liable for any civil damages for acts or omissions other than damages occasioned by gross negligence or by willful or wanton acts or omissions by such person in rendering such emergency care;
(2) In good faith render emergency care or assistance, without compensation, to any minor involved in an accident, or in competitive sports, or other emergency at the scene of an accident, without first obtaining the consent of the parent or guardian of the minor, and shall not be liable for any civil damages other than damages occasioned by gross negligence or by willful or wanton acts or omissions by such person in rendering the emergency care.
2. Any other person who has been trained to provide first aid in a standard recognized training program may, without compensation, render emergency care or assistance to the level for which he or she has been trained, at the scene of an emergency or accident, and shall not be liable for civil damages for acts or omissions other than damages occasioned by gross negligence or by willful or wanton acts or omissions by such person in rendering such emergency care.
3. Any mental health professional, as defined in section 632.005, or qualified counselor, as defined in section 631.005, or any practicing medical, osteopathic, or chiropractic physician, or certified nurse practitioner, or physicians' assistant may in good faith render suicide prevention interventions at the scene of a threatened suicide and shall not be liable for any civil damages for acts or omissions other than damages occasioned by gross negligence or by willful or wanton acts or omissions by such person in rendering such suicide prevention interventions.
4. Any other person may, without compensation, render suicide prevention interventions at the scene of a threatened suicide and shall not be liable for civil damages for acts or omissions other than damages occasioned by gross negligence or by willful or wanton acts or omissions by such person in rendering such suicide prevention interventions.
(L. 1979 H.B. 445 § 1, A.L. 1983 1st Ex. Sess. H.B. 8, A.L. 1986 H.B. 860, A.L. 2005 H.B. 462 & 463, A.L. 2008 S.B. 1081)
http://www.moga.mo.gov/statutes/c500-599/5370000037.htm
Everybody else, if you go to the aid of somebody and you hose it up, you take your chances.
Personally, I've been in a situation where I've helped out several times in emergency situations. The first time, the car my Dad was working on fell on him when a jack failed. I got him out, checked him for injuries, and called an ambulance. The second time occurred when a friend of mine kicked a gas can (like an idiot) and got himself caught on fire. I tackled him and put the fire out. No injuries. The third time, a guy was having a diabetic seizure in a restaurant and I was able to get sugar and Coke down his gullet without having one of more fingers bitten off.
Helping is instinctive. I can't not do it, evidently. But I'm still conscious of how the laws have changed and, in particular, how tort has become more and more sophisticated.